Meter



Feb. 15, 1927,

w. L; MARDEN METER Filed Feb. 4, 19

2 Sheets-Sheet 1 BY I I WW A 01mm;

y 1617,407 Feb. 15, 1927. w. L. MARDEN METER Filed Feb. 4. 1926 2 Sheets'-Sheet 2 INVENTOH III Patented Feb- UNITED STATES,

1,617,407 PATENT-OFFICE.

WILLIAM 1.. menu, or nnunuas'r, N'nwvonx, ASSIGNOR T0 nn'rru'mn mama comm, or mew roux, N. Y., A oonronarron on NEW mnsur.

man.

Application filed February 4, 1926. Serial m. 85,880.

This invention relates metering devices.

of that type in which the 'registe'r"is actuated by the revolutions of a propeller wheel driven by the fluid as it passes through the meter. The invention has been developed with particular reference to metering devices of the character referred to, desi ed for use in connection with gasoline filling stations and has for its object to meet some of the conditions of such use, although some fea-' tures of the improved constructlon will be .found applicable'to other specific uses. In

Another condition found to exist is that dis- The invention will be more fully explained hereinafter with reference to the accompanying drawings in which it is illustrated and in which:

Figure 1 is a. view in partial sectional elevation, on the plane indicated by the broken line 11 of Figure 2, of a meter which embodies the several improvements.

Figure 2 is a top view of the same, with the cover partly broken away,

Figure 3 is a view in vertical sectional elevation on the plane indicated by the broken line 33 of Figure 2.

Figure 4 is a detail view partly in section on the planeindicated by the broken line 4-4 of Figure 1.

Figures 5 and 6 are detail views illustrating particularly the device for preventing backward movement.

The structure in which the invention is embodied has been designed with particular reference to convenience in manufacture, simplicity and security. As shown, it comprises a' main casing a with an inflow connection at a and a discharge connection at a. The inflow connection is provided with a strainer a held in plaeeby a threaded thimble a, and the discharge connection a is provided with a downwardly opening air inlet a having a check'valve a, preferably of aluminum, to admit air for the pn ose of breaking the vacuum which might 0t rwise be formed as the last of the asoline flows from the meter, resulting in t e continued operation of the metering devices after the gasoline has passed the propeller "and therefore in inaccuracy of registration.

Interiorly the casing 11. is formed with'a partition wall a and with machined surfaces as at o to receive the skeleton frame '6 on which are supported the working parts, to be men;

tioned. The working parts can thus be removed and replaced readil removable cap or cover it", ii

bolts af, preferably capable of being sealed in positlon, covers the-working'parts and prevents lmproper manipulation, being itself provided with asight opening, as at a, for

observation of the register. The sight 0 ening may itself be covered, if desired, y a hinged cover a which can be locked in position. I

as a unit. A eld to the mam casing a by any convenient means, such as The skeleton frame I) carries, between the inlet and the outlet, a propeller c fixed ona vertical shaft 0' which at its lower end has a suitable bearing 0 and at its upper end is in operatlve relation .with. the gearing through which the register is driven. As

shown, shaft 0' is itself formed with a worm c which meshes with the worm wheel 0 of vthe train of gearing a through which the register d, of usual construction, is driven.

At varying rates of flow the propeller 0, if provision were not made to prevent, would rotate at different rates of speed, with resulting inaccuracy in theiactuation of the register. If the flow is slow, the propeller is sluggish and the registration by the register might be too little. .On the other hand, if the flow is rapid, the propeller might rotate sorapidly as to cause the register to overindicate. In the development of this'invention it has. been found that the operation of the propeller can be regulated to compensate for a different rate of flow-and therefore to secure accuracy in the operation of the register by placing in proper relative position with respect thereto a regulator e, which 6 consists of a peripheral shell e, preferably cylindrical, supported b spider arms 6 This regulator might be xed in position by any suitable means, but in order that every meter may be adjusted or calibrated when 10 it is installed so as to meet the conditions of the particular installation, it is so supported as to be capable of movement toward or form the propeller c. It will be evident from the foregoing statement of the causes of inac- 1 curacy in. meters of this type, that when the disc is moved downwardly, the flow of the liquid is throttled and thus any tendency of the wheel to overrun due to too great a flow is counteracted. Movement away from the propeller has the reverse effect, viz-it overcomes errors due to too sluggish movement of the wheel-.3 'As shown, it is carried by a rod, f whichg'at its upper end, as at f, is threaded n'gagement with a bridge piece g, and is o t-ted, as at f, for engagement,

when thewap c is removed, by a screwdriver.- on other suitable tool. Thereby the regu-latorc can bemoved with reference to the propeller cand thereby regulate the effeet of the flowing liquid on the propeller sojas to secure practically uniform registration for all rates of flow. Without such regulator the indication of the register may vary fromlaccuracyby a large percentage underdifierent rateslof flow, but with the regulator-the;.inaccuracy-.of re istration is reduced-,tp; a small andnegligi le-percentage.

3T6; prevent backward rotation of the registerashy the action of a reverse current of air on the propeller 0, there is hung upon some convenient-member, as d, of theregis- 21; ter supporting frame, a stop It, the toe h of which hangs 1n convenient juxtaposition to a stud 0, carried by the shaft 0', while the heel h is shaped for coaction with a frame memberd so astofpermit the latch-to be ,swung by the stud 0,zwhen the shaft 0' rotates inthe proper direction,so as to permit rota-' tion of the shaft, as indicated by brokenlines in Figure 6, and'to contact with the frame member d -,.if the shaft should be rotated in the. opposite direction, and thereby prevent movement ofgthelatch to such aposition as topermit'passage of the stud c. Such con- 58 tact withplateaii occurs through the-*lower projecting-portion of the heel k Thus the mechanism'operate's similar to a ratchet and pawl device.

It will be understood that variousv changes 60 in. detailsof construction andarrangement can be made to suit different conditions of nfuse or the convenience of the manufacturer.

and that, except as pointed out in the accompanying claims, the invention is not restricted to the precise construction shown and described herein.

I claim as my invention 1. A meter comprising a main casing having an inlet and an outlet and a partition wall, metering devices supported within the, casing, and an air inlet provided with an inwardly opening check valvcconnected to the outlet. I

2. A meter comprising a main casing having an inlet and an outlet and a partition Wall,;a propeller between the inlet and the outlet, a register, transmitting mechanism between the propeller and the register, a regulator mounted in proximity to the propeller and in axial relation therewith and movable bodily toward and from the propeller to regulate the effect of the flow on the propeller, and manually operated means to vary 'theposition of the regulator with respect to the propeller. v v

3. A meter comprising a main casing having an inlet and an outlet and-a partition wall, a propeller between the inlet and the outlet, a register, transmitting mechanism between the propeller andthe register, a regulator comprising a peripheral shell and a supporting spider mounted-in proximity to the propeller and in axial relation therewith and movable bodily toward and from the propeller to regulatethe effect of the flow on the propeller,and manually operated means to vary the position of the regulator with respectto the propeller. a

4. A meter comprising a main casing hav.-.; ing an inlet. and an outlet andfa partition wall, a propeller between the inlet, and the outlet, a register, transmitting mechanism between the propeller and ,the' register a regulator comprising a peripheral shell and a supporting spider, and meansgto support the same inadjusted position witharespect to the propeller to vary the action'thoreon of' the flow.

5. A meter comprising a'main casing having, an inlet and an outlet and a partition wall, a propeller between the inlet and the outlet, a register, transmitting" mechanism betweenfthe propeller and the register,- a regulator comprising a peripheral-shell and a supporting spider, a shaft 'ro'tatably engaged at. one end with the regulator and" screw.- threaded at the other end, and abridge piecewith which the shaft has screw-threaded engagement whereby the position of the regulator with respect to the propeller can be varied.- i

This specificationv signed this-2nd day of February, A. D. 1926.

.. 5 WILLIAM .L.-.JMA-RDEN. 

